Ishihama is a right-side defender for ETU. Like many of the younger players, he became a regular under Tatsumi but is not as skilled as the defensive pair of Yusaku Sugie and Kazuki Kuroda. Ryo Akasaki especially is disparaging of their skills and even accused him and Kazumi Kiyokawa of playing only for fun and not to win. Ishihama left ETU for Vanguard Kofu during the summer break.